インテル® Fortran コンパイラー 19.0 デベロッパー・ガイドおよびリファレンス

IEEE_IS_NEGATIVE

Elemental Module Intrinsic Function (Generic): Returns whether an IEEE value is negative.

Module

USE, INTRINSIC :: IEEE_ARITHMETIC

result = IEEE_IS_NEGATIVE (x)

x

(Input) Must be of type REAL.

Results

The result type is default logical. The result has the value true if the value of x is negative; otherwise, false.

An IEEE value is negative if IEEE_CLASS(x) has one of the following values::

IEEE_NEGATIVE_NORMAL

IEEE_NEGATIVE_ZERO

IEEE_NEGATIVE_DENORMAL

IEEE_NEGATIVE_INF

Example

IEEE_IS_NEGATIVE (2.0) has the value false.

See Also